The same release includes this explanation of how “Endeavour” beat out “11” to become the beer’s name:

The beer’s name, first suggested by a NASA astronaut, was selected by you who voted to name it after the space shuttle Endeavour, which in turn was named after Captain James Cook’s ship that explored the Pacific. Captain Cook’s ship was a bark, similar to ELISSA, Texas’ tall ship moored in Galveston and the namesake of Saint Arnold Elissa IPA.